A vehicle lamp module with heat dissipation function

Abstract

The utility model relates to a car lamp module with heat dissipation function, including lamp shell, the lamp shade connected on lamp shell, first aluminium base plate and second aluminium base plate, be equipped with lamp pearl on first aluminium base plate, be equipped with drive circuit on second aluminium base plate, drive circuit and lamp pearl electric connection, along the thickness direction of first aluminium base plate, first aluminium base plate and second aluminium base plate interval setting and form with preset interval, and first aluminium base plate and second aluminium base plate between be equipped with support, the lamp shell and lamp shade combine and form and have installation space, first aluminium base plate, second aluminium base plate and support all locate in installation space. The utility model's advantage lies in: will light source and drive heat source scatter to two independent aluminium base plate, has promoted the overall heat dissipation efficiency of car lamp module, and low cost.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a vehicle lamp module with heat dissipation function. Background Technology

[0002] The headlight module on an electric vehicle or motorcycle projects light through the interaction between LED beads on a circuit board and a lens. The LED beads and their driving circuitry in the headlight module generate a significant amount of heat during operation. If this heat cannot be dissipated in time, it will shorten the lifespan of the headlight module or even cause it to fail completely.

[0003] In the existing technology, automotive lighting modules typically arrange the light-emitting chips and related circuits on the same aluminum substrate, utilizing the good thermal conductivity of the aluminum substrate itself for heat dissipation. However, due to the limited internal space of the lamp, the area of ​​the aluminum substrate cannot be made large, resulting in insufficient inherent heat dissipation capacity. It is necessary to add an additional heat sink below to provide more heat dissipation. However, the cost of the heat sink is relatively high, which leads to increased costs. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art and provide a vehicle light module with heat dissipation function.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A vehicle headlight module with heat dissipation function includes a headlight housing, a lamp cover connected to the headlight housing, a first aluminum substrate and a second aluminum substrate. The first aluminum substrate is provided with LED beads, and the second aluminum substrate is provided with a driving circuit. The driving circuit is electrically connected to the LED beads. Along the thickness direction of the first aluminum substrate, the first aluminum substrate and the second aluminum substrate are spaced apart and form a preset distance, and a bracket is provided between the first aluminum substrate and the second aluminum substrate. The lamp housing and the lamp shade together form an installation space, and the first aluminum substrate, the second aluminum substrate and the bracket are all located within the installation space.

[0006] In one embodiment, the area of ​​the first aluminum substrate is S1, and the area of ​​the second aluminum substrate is S2, wherein 0.4*S1≤S2≤0.6*S1.

[0007] In one embodiment, the preset spacing is set to D, where 8mm ≤ D ≤ 12mm.

[0008] In one embodiment, the bracket has a retaining portion fixed to the second aluminum substrate and surrounding the drive circuit, such that a potting space is formed between the retaining portion and the second aluminum substrate, and the potting space is filled with potting adhesive.

[0009] In one embodiment, the edge of the second aluminum substrate is formed with an extension that extends outward relative to the enclosure portion.

[0010] In one embodiment, the lamp housing has a receiving cavity, the second aluminum substrate is at least partially disposed in the receiving cavity, and the bottom wall of the receiving cavity has a wire outlet hole that communicates with the mounting space.

[0011] In one embodiment, the bracket has a plurality of connecting posts, and fasteners pass through the first aluminum substrate or the second aluminum substrate and are connected to the connecting posts to fix the bracket between the first aluminum substrate and the second aluminum substrate.

[0012] In one embodiment, the bracket also has a plurality of positioning posts, corresponding to positioning holes formed on the first aluminum substrate and the second aluminum substrate, and the positioning posts are positioned and engaged with the positioning holes.

[0013] In one embodiment, the positioning post is located at the edge of the connecting post and is connected to the connecting post.

[0014] In one embodiment, the headlight module further includes a first lens and a second lens, the first lens being fixed on the first aluminum substrate, the first aluminum substrate having a positioning block, and the second lens being fixed on the positioning block.

[0015] The advantages of this utility model: The present invention claims a vehicle lighting module with heat dissipation function. By distributing the heat source to two independent aluminum substrates, the total heat dissipation radiation surface of the first and second aluminum substrates is also greatly increased. This maximizes the utilization of the heat dissipation surface area of ​​the aluminum substrates within a limited space, avoids the two main heat sources of light source and driving circuit being concentrated in one place and causing heat superposition, and forms two heat dissipation paths, thereby improving the overall heat dissipation efficiency of the vehicle lighting module and reducing costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an overall view of a vehicle headlight module provided in an embodiment of the present utility model; Figure 2 This is an exploded view of a vehicle headlight module provided in an embodiment of the present invention; Figure 3 This is a cross-sectional view of a vehicle headlight module provided in an embodiment of the present invention; Figure 4 This is a partial structural diagram of a vehicle headlight module provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of a bracket provided in one embodiment of the present invention.

[0018] Reference numerals: 100, vehicle headlight module; 10, lamp housing; 11, mounting space; 12, receiving cavity; 13, wiring hole; 20, lamp cover; 30, first aluminum substrate; 31, lamp bead; 32, positioning block; 40, second aluminum substrate; 41, extension; 50, bracket; 51, enclosure; 52, connecting post; 53, positioning post; 61, first lens; 62, second lens. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0024] This utility model claims protection for a vehicle headlight module with heat dissipation function, which is used in electric vehicles or motorcycles for lighting.

[0025] Please see Figures 1 to 3 An embodiment of the present invention provides a vehicle lamp module 100 with heat dissipation function, including a lamp housing 10, a lamp cover 20 connected to the lamp housing 10, a first aluminum substrate 30 and a second aluminum substrate 40. The first aluminum substrate 30 is provided with LED beads 31, and the second aluminum substrate 40 is provided with a driving circuit. The driving circuit is electrically connected to the LED beads 31 and is used to control the operation of the LED beads 31.

[0026] Along the thickness direction of the first aluminum substrate 30, the first aluminum substrate 30 and the second aluminum substrate 40 are spaced apart and have a preset gap. A bracket 50 is provided between the first aluminum substrate 30 and the second aluminum substrate 40. The lamp housing 10 and the lamp shade 20 together form an installation space 11. The first aluminum substrate 30, the second aluminum substrate 40 and the bracket 50 are all located in the installation space 11.

[0027] This configuration distributes the heat source to two independent aluminum substrates, significantly increasing the total heat dissipation radiation surface of the first aluminum substrate 30 and the second aluminum substrate 40. It maximizes the utilization of the heat dissipation surface area of ​​the aluminum substrate within a limited space, avoiding the two main heat sources, the light source and the driving circuit, from concentrating in one place and causing heat superposition. It forms two heat dissipation paths, improving the overall heat dissipation efficiency of the vehicle lighting module 100, and at a lower cost.

[0028] In one embodiment, the area of ​​the first aluminum substrate 30 is S1, and the area of ​​the second aluminum substrate 40 is S2, wherein 0.4*S1≤S2≤0.6*S1.

[0029] Preferably, S1 and S2 satisfy S2 = 0.5 * S1.

[0030] It is important to understand that the total heat comes from the heat generated by the light source and the heat generated by the drive, with the heat from the light source accounting for 70% and the heat from the drive accounting for 30%. Based on this heat distribution, a reasonable configuration of the area ratio of the first aluminum substrate 30 and the second aluminum substrate 40 is beneficial to maximizing heat dissipation efficiency.

[0031] like Figure 4 As shown, in one embodiment, the preset spacing is set to D, where 8mm ≤ D ≤ 12mm. Thus, the preset spacing formed between the first aluminum substrate 30 and the second aluminum substrate 40 can serve as an airflow channel, ensuring airflow and enhancing heat dissipation.

[0032] Preferably, the preset spacing D is set to 10mm. Of course, in other embodiments, the preset spacing D can also be set to 8mm, 9mm, 11mm or 12mm, etc., as needed.

[0033] In one embodiment, the support 50 has a surrounding portion 51, which is rectangular in shape and fixed to the second aluminum substrate 40 and surrounds the drive circuit, so that a potting space is formed between the surrounding portion 51 and the second aluminum substrate 40, and the potting space is filled with potting compound. The surrounding portion 51 can form a surrounding wall on the second aluminum substrate 40, producing a dam effect, so as to accurately and smoothly pour the potting compound into the potting space.

[0034] Using potting compound with good thermal conductivity also helps to conduct the heat generated by the drive circuit more evenly to the second aluminum substrate 40 and the air, assisting in heat dissipation, and avoiding direct exposure of the components and lines of the drive circuit, thereby achieving the functions of waterproof, dustproof and shockproof protection for the drive circuit.

[0035] like Figure 5 As shown, in one embodiment, an extension 41 is formed on the edge of the second aluminum substrate 40. The extension 41 extends outward relative to the enclosure portion 51. That is, the enclosure portion 51 does not surround the edge of the second aluminum substrate 40, but forms a potting area on the inner surface of the second aluminum substrate 40 in order to increase the heat dissipation surface area of ​​the second aluminum substrate 40.

[0036] like Figure 4As shown, in one embodiment, the lamp housing 10 has a receiving cavity 12, which is part of the mounting space 11. The second aluminum substrate 40 is at least partially disposed in the receiving cavity 12, making full use of the space. The bottom wall of the receiving cavity 12 has a wire outlet hole 13, which communicates with the mounting space 11 to facilitate air circulation and enhance heat dissipation.

[0037] like Figure 5 As shown, in one embodiment, the bracket 50 has a plurality of connecting posts 52, and the connecting posts 52 are provided with threaded holes. Fasteners such as screws or bolts are used to pass through the first aluminum substrate 30 or the second aluminum substrate 40 and connect to the connecting posts 52 to fix the bracket 50 between the first aluminum substrate 30 and the second aluminum substrate 40.

[0038] In one embodiment, the bracket 50 also has a plurality of positioning posts 53, corresponding to positioning holes formed on the first aluminum substrate 30 and the second aluminum substrate 40. The positioning posts 53 are positioned and engaged with the positioning holes, and the positioning posts 53 play a role in positioning and preventing mistaken identification.

[0039] Furthermore, the positioning post 53 is located at the edge of the connecting post 52 and connected to the connecting post 52. The connecting post 52 and the positioning post 53 form a composite structure with a larger cross-sectional area and greater strength, which enhances the structural strength and prevents local deformation around the connecting post 52 when the screws are tightened.

[0040] In one embodiment, the vehicle headlight module 100 further includes a first lens 61 and a second lens 62. The first lens 61 is fixed on a first aluminum substrate 30, and a positioning block 32 is provided on the first aluminum substrate 30. The second lens 62 is fixed on the positioning block 32. The light emitted by the LED beads 31 is focused twice by the first lens 61 and the second lens 62 in sequence to form a good lighting effect.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the patent protection scope of this utility model should be determined by the appended claims.

Claims

1. A vehicle headlight module with heat dissipation function, characterized in that, It includes a lamp housing (10), a lamp shade (20) connected to the lamp housing (10), a first aluminum substrate (30) and a second aluminum substrate (40). The first aluminum substrate (30) is provided with lamp beads (31), and the second aluminum substrate (40) is provided with a driving circuit. The driving circuit is electrically connected to the lamp beads (31). Along the thickness direction of the first aluminum substrate (30), the first aluminum substrate (30) and the second aluminum substrate (40) are spaced apart and form a preset gap, and a bracket (50) is provided between the first aluminum substrate (30) and the second aluminum substrate (40). The lamp housing (10) and the lamp shade (20) together form an installation space (11), and the first aluminum substrate (30), the second aluminum substrate (40) and the bracket (50) are all located in the installation space (11).

2. A vehicle headlight module with heat dissipation function according to claim 1, characterized in that, The area of ​​the first aluminum substrate (30) is S1, and the area of ​​the second aluminum substrate (40) is S2, wherein 0.4*S1≤S2≤0.6*S1.

3. A vehicle headlight module with heat dissipation function according to claim 1, characterized in that, The preset spacing is set to D, where 8mm≤D≤12mm.

4. A vehicle headlight module with heat dissipation function according to claim 1, characterized in that, The bracket (50) has a retaining portion (51) which is fixed to the second aluminum substrate (40) and surrounds the drive circuit, so that a potting space is formed between the retaining portion (51) and the second aluminum substrate (40), and the potting space is filled with potting adhesive.

5. A vehicle headlight module with heat dissipation function according to claim 4, characterized in that, The edge of the second aluminum substrate (40) is formed with an extension (41) that extends outward relative to the enclosure portion (51).

6. A vehicle headlight module with heat dissipation function according to claim 1, characterized in that, The lamp housing (10) has a receiving cavity (12), and the second aluminum substrate (40) is at least partially disposed in the receiving cavity (12). The bottom wall of the receiving cavity (12) has a wire outlet hole (13), which communicates with the installation space (11).

7. A vehicle headlight module with heat dissipation function according to claim 1, characterized in that, The bracket (50) has a plurality of connecting posts (52), and fasteners pass through the first aluminum substrate (30) or the second aluminum substrate (40) and are connected to the connecting posts (52) to fix the bracket (50) between the first aluminum substrate (30) and the second aluminum substrate (40).

8. A vehicle headlight module with heat dissipation function according to claim 7, characterized in that, The bracket (50) also has a plurality of positioning posts (53), and positioning holes are provided on the first aluminum substrate (30) and the second aluminum substrate (40) respectively. The positioning posts (53) are positioned and engaged with the positioning holes.

9. A vehicle headlight module with heat dissipation function according to claim 8, characterized in that, The positioning post (53) is located at the edge of the connecting post (52) and is connected to the connecting post (52).

10. A vehicle headlight module with heat dissipation function according to claim 1, characterized in that, The vehicle headlight module (100) further includes a first lens (61) and a second lens (62). The first lens (61) is fixed on the first aluminum substrate (30). The first aluminum substrate (30) is provided with a positioning block (32). The second lens (62) is fixed on the positioning block (32).

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